Reference : Optical and magnetic properties of Fe2+ and Cr2+ in II-VI semiconductors: The Jahn-Te...
Scientific congresses and symposiums : Paper published in a journal
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/23956
Optical and magnetic properties of Fe2+ and Cr2+ in II-VI semiconductors: The Jahn-Teller effect
English
Colignon, David mailto [Université de Liège - ULg > Physique > Physique Théorique et Physique des Semiconducteurs > >]
Kartheuser, Eduard mailto [Université de Liège - ULg > Physique > Physique Théorique et Physique des Semiconducteurs > >]
Rodriguez, Sergio mailto [Purdue University - Purdue > Physics > > >]
Villeret, Murielle [City University London > Mathematics > > >]
1996
Journal of Crystal Growth
Elsevier Science
159
1-4
875-878
Yes (verified by ORBi)
International
0022-0248
Amsterdam
The Netherlands
Seventh International Conference on II-VI Compounds and Devices
13-18 August 1995
Edinburgh
United Kingdom
[en] The D-5 terms of Fe2+ and Cr2+ in the tetrahedral potential at cation sites in II-VI compounds split into orbital doublet and triplet states. While in Cr2+ the orbital tripler has lower energy than the doublet the opposite is the case in Fe2+. Both ions have singlet ground states after the spin-orbit interaction is taken into account and, hence, both are Van Vleck paramagnets. The optical absorption spectra of Fe and Cr based materials differ and are explained on the basis of a dynamic Jahn-Teller effect in the former and a static one in the latter. These considerations permit us to explain the optical as well as the magnetic properties observed in these materials.
http://hdl.handle.net/2268/23956

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